/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineSessionInterface.h
virtual void TriggerOnRegisterPlayersCompleteDelegates ( [FName](API\Runtime\Core\UObject\FName) Param1, const [TArray](API\Runtime\Core\Containers\TArray)< FUniqueNetIdRef > & Param2, bool Param3 )